This equalizer has automatic level control, being designed by Sanyo for cassette recorders and radio. The maximum supply voltage of the LA3210 is 15 V and the typical idle current of 1.4mA.
This circuit can be used as an amplifier for musical instruments or even with your cell phone. The...
The diagram below is an application of the Texas Instruments TPS25221 to an ISM controlled power...
This application is not modern since few computers have parallel ports. But you can use this...